In addition to the adjustable A-Frame glasses designed to fit any face, Ron Arad also created another unique set of sunnies called the Corbs that eschew a traditional hinge for a design inspired by a skeletal vertebrae.

For some, the task of finding a pair of glasses or sunglasses is an epic task. Not only do you have …
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His design team apparently spent a bit of time studying how an animal's vertebrae actually works, allowing the spine to bend in only one direction. And they applied what they learned to the Corbs which feature a slatted design on the outside of the glasses' arms so they can bend inwards, but never out. That approach also tends to naturally squeeze the wearer's head providing a snugger fit, although, their unique designs are only going to benefit those interested in sporting the latest en-vogue accessories.